Apparatus for applying stop-motion detectors to warp-threads.



Patented Sept. 2, 1913.

...WrC'UQH/ZO? i J. f'. DUSTIN. APPARATUS FOR APPLYING STOP MOTION DETECTORS TO WARP THREADS.

42 #lf/zzn j APPLICATION FILED AUG. 6, 1912.

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JOHN F. DUSTIN, k0F LAWRENCE, MASSACUSETTS.

.APPART FOR APPLYING STQP-MOTIQN DETEOTORS TG 'WARPLTHREAD speculation of Letters ateat.

Patented Sept. 2,1913.

Application filed August 6, H512. Serial No. 713,532.5.

To all 'whom/15 may concern Y Be it known that I, JOHN F. DUs'rIN, a citizen of the United States, and resident of Lawrence, county of Essex, State of Massachusetts, have invented uit Improvement in Apparatus for Applying Stop=Motion Detectors to 1Varp'lfhreads, of which the following description, in connection with the accompanying drawing, is e specification, like characters on the drawing representing like parts.

This invent-ion has for its object the production of an apparatus for applying me chanically to a sheet of warp threads the drop bars or detectors by or through which the stopLmotion is bron ht into operation when a warp thread fai e or slackens unduly, and l have herein shown a practical embodiment of my invention arranged to apply the detectors to the sheet of warp in a loom.

' ln the embodiment: of my invention herein illustrated I deal with detectors which have a slot-like opening for the reception of thev warp thread, each detector being hung upon a single thread, and prefere-bly said detectors are thin, flat strips of sheet metal, each having a thread-receiving slot extended longitudinally thereof and open at its lower end. Above this slot each detector has what may be termed a keyehole aperture, comprising a circular portion and a. radial prolongaticn extending longitudinally of the dc tector, and the upper end of the latter has a closed, elongated slot adapted for' the reception of a transverse support und rotatably movable feeler members, substantially such as shown in United States Patents Nos. 1,043,814 and 1,048,815, granted to me on the 12th daz,r of November, 1912.

Heretofore the drop devices or detectors have been applied to the warp by hand, either atthe time the latter is drawn into the harnesses, or after the warp has been set up in the loom, and the latter lmethod is the one in most extended use, particularly with the so-called hairpin type of detector. This hand application is time consuming and la-' horious, and my presentl invention provides a compact, simple form of apparatus whereby the application of the detectors is eftested mechanically in a rapid and easy, manner, the apparatus being readil) rc-L moved when the application ot the detectors to the sheet of warp has been completed.

The various novel features of my invention will be fully described in the subjoined specication and particularly pointed out in thepfollowing claims.y

Figure l is a side elevation and part section of an apparatus embodying one practical crm of my present invention, on the line 1-1,1i`ig. 2, showing the apparatus in operative position with relation to the sheet of warp in a loom; Fig. 2 is a part plan view and horizontal section on the line 2 9., Fig. 1, of the apparatus, showing in sect-ion portions of theloom sides, and partly broken out; Fig. 3 is a left hand' side elevation of the apparatus. shown in Fig. 1, thesupporting means bemghomitted; Fig. 4 is a plan and section, on t e line 4 4, Fig. 1, looking down, to be referred to, Fig. 5 is an enlarged face view of the detector which has )ust been discharged frornthe group of Adetectors shown in Fig. 1; Fig. 6 is a similar view of the next detector to be discharged and corresponds to the uppermost one at the lefnFig. 1, and also shown in Fig. 3.

in the present embodiment of my invention the operative instrumentalities are mounted on a carriage which is supported above the sheet of warp and movable transversely thereof, the carriage support comprising two parallel rods 1, l., rigidly connected at tl'eir ends by brackets 2, each bracket having a lateral ear 3, Fig. 2, by means of which the bracket is attached temporarily to a part 4 of the loom side, by a suitable bolt- 5, the rods constituting a hori- Zontal guideway or track above the sheet-'ot warp and upon which the carriage is movable bodily. I

1 have shown i/t Figs. 1, 2 and 4 the warp threads separated into two divisions w, fw bg' lease rods W, W', end in Figs. Q and it t e lateral separation of the warp threads is considerably exaggerated, Afor clcurness iu illustration, and the detectors are applied to er hung upon the threads between the lease ro's so that adjacent detectors hang from xthreads in different divisions of the warp,

in ,well known mannen.

Referring to Fig. 1 I have indicated by dotted lines two warp rests VX., of Yany suitable construction and of themselves forming no part of my invention.y Before describing the apparatus I will refer brieli;7 to the detectors 6, which preferably are thin, dat strips of sheet metal, each having an elongetedMcloscd slot 7 in its -upper portion and a longitudinal slot 8 in itslower por in the apparatus they are arranged in alternation, adjacent vdetectors having the extensions 1() pointing in opposite directions. The A[stacking can bel done readily and cheaply, and in practice preferably a suiiicientI number of detectors would be stacked to supply a sheetof Warp containing a given number of threads. The'brackets 2 have rigidly attached to them a non-rotatable, screw-threaded rod 11, between and parallel to the vguide rods 1, which latter sustain an upright carriage 12 Aprovided `vith afoot 13 through Which the threaded rodandone of the rods l1 extend loosely, so

that the carriage may slide lengthwise l *thereaffl `As..s`l1ow'n in Fig. 2 the carriage and its foot are provided with elongated bearing bosses 14, 15 forfthe guide rodsa vertically ialined bearings 16 on the carriage, above the lrod 11, support a shaft 17 havin fast upon at its upper and lower ends evel gears 18, 19, Fig. 1, said gear 19 meshing with a llarger bevel gear 20.in threaded engagement with the rod 11. This gear 20 is in effect a nut, andas it is held from axial movement relatively to the carriage by its location between the. foot 13 and a sleeve 21, Fig. 2, loosely surrounding rod 11 and depending from the lower bearin 16, it will be manifest that rotation of tie said ear 20 will, by its threaded engagement with the fixed rod 11, cause the carriage 12 and its adjuncts to be moved gbodily transversely ot' the sheet of Warp aildupon the guideway 1, 1. In Fig. 2 the bodilyy movement of the carriage is indicated by the arrow. The shaft 17 is a transmitting shaft, and its gear-gi 18 is in mesh Witbalbevel gear 22 fast on a horizontal actuating/:shaft 23 rotatable in bearings at 24, 25, lie latter leing formed in an upright part 26 of, the carriage, the shaft being rotated by a ysuitable handle 27.

Referring to Fig. 1 it will be seen that the part of the shaft in the bearing 25 is enlarged, at 28, and has a still larger head 29 adjacent the face of the carriage part 26, a collar 30 at the opposite face and fixed on the shaft preventing endWise movement thereof. The head 29 and ladjacent part 28 .of the shaft are longitu'dinally bored at 31.

to receive a detachable cylindrical shaft or.

Vhen the detectors are r rod 32, held in place by a screw l33", and

having a spiral rib 33 around its outer end, shown in Fig. 1 as making one complete turn, the rib and adjacent part of the rod constituting a detector separating and discharging device, and for convenience and brevity termed the separator. The rod 32 is adapted to enter the circular portions 9 of the key-hole apertures of the detectors, and the rib' 33 is arranged to traverse the extensionsZ 10 of such apertures, and by rotatiohf to gradually' move the detectors longitudinally of the rod, as will be explained, the inner end of the rib being beveled to facilitate its engagement with a detector. The part of said rod or shaft 32 between the head 29 and the rib 33 is adapted to sup- -port in upright position a group or series yof detectors, as at 6", Fig. 1, arranged face to face and with `the extensions 10 in adjacent detectors oppositely extended, as previously referred to. The grouped detectors are prevented from swayln by a forked gliiide 34 extended horizontal y from the upright 26 and cooperating with the depending ends of the detectors which are suspended. by the rod 32. Headed plungers 35, slidable horizontally in the upright 26 and projected by springs 36, be r. against the rearmost one of the lroup 6%* of detectors, and tend to move or eed the group toward the separating device. The inner, beveled end of the rib 33 When engaging the face of the foremost or leading detector of the series acts as a stop for it and for those detectors behind it, but when the said end o the rib comes opposite the ext nsion 10 of the key-hole aperture the feeding action of the plungers 35 Will cause said rib to enter such extension and pick up the detector, but itr will abut against the face of and stop the next detector until the rod 32 has made a` half revolution. Now as the rod is revolved the spiral rib 33 acts upon the endmost detecto-r and moves it longitudinally of the rodf and separates it from its fellows, as shown in Fig. 1.

In Fig. 1 it is supposed that a detector hasjust been discharged from the separator, that a second one has been separated from the group and is half Way along the spiral rib, and that the inner end of the rib'is -just about to pick off and separate the endmost detector of the group 6". As the rod 32 traverses the circular part 9 of each keyhole aperture, and the rib 33 traverses the oiIset or extension 10 of such aperture, eccentric' to the art 9, the rotation of the sepa'ator would) tend to turn the detector eng: ged by`the rib 33, but such movement of the detector is prevented by the guide 34, which remains in engagement with a detector until after it is discharged. Consequently the rib 33 acts to move the detector longitudinally from the group of detectors,

'along the separator, and finally to discharge it from the outer end of the separator, as will be apparent, whence the discharged detector drops byrgravity onto a warp thread, as Will now be efqilained. A strut 37 on the carriage supports a hopper-like directing device or racev'ay 38, which is slightly wider than the width of a detector, and which has a flared or bell-mouth to receive a discharged detector, the racewaydecreasing in dimensions .at its lower or delivery end, leaving a slit-like outlet opening 39, Fig. 2, through which a detector can slide easily. 'The outlet 353) is transverse to the Warp threads and sonic little distance above them, so that when a detector, t3, Fig. 1, drops onto a thread the upper end ot' the detector will be clear ot the bottoni ot said raceway, hut the latter will remain in control of the descending detect( until the thread has entered the slot or opening S in the detector.

l `ronithe foregoing it will be seen that by rotating the actuating shaft 23 the detectors will he separated one by one from the group cr series of detectors and dischargedsingly, each discharged detector being guided and directed onto a Warp thread as it descends hy gravity through the racen'ay 38, aud as the detectors are so discharged the coperation ot' the gear 2O and threaded rod 11 will effect a slow step by step mot-ion of the ear-I riage and its'adjuncts bodily transversely of and above the sheet ot warp. It only remains to position automatically one after another the warp threads so that as each thread is individualized and temporarily 'separated from its fellovs a discharged detector will drop upon it, and I will now describe-one means for so individualizing or positioning the warp threads. The lower part of the carriage 12 is provided with a horizontal Shelf-like etension 40 cut out around the raceway 38 and extended parallel to the Warp threads, said extension having upright tubular bearings 4l for vertically slidable separators, shown as plungers 42, each having a tapered or conical lower end 43, each adapted to pass between and separate latorally tivo adjacent threads. The side of each bearing 41 has a vertical slot, Fig. 1, through which projects a stud 44 fixed in and extended laterally from the separator,

i and the two studs enter oppositely inclined earn slots 45 in a plate 4G set on edge and slidable in a guideway 47 in the extension 40, cap-plaiesv 48 retaining the plate 46 in place'. y

Viewing Fig. 1 it will be seen that the tvvo separators 42 are" located between the lease rods W, WV and that the crossing pointy of the t-vvo divisions fw, w ot' the Warp is lee-` tween said separators, and that the rear Separator 1s down and operatlve.

That is,l it has moved ldown between two Warp threads fw. and fw and has separted them eeive a detector, as 6*", delivered therefrom, and at this time. the front separator' 42 is elevated. Non' as the apitiaratus is .actuated the carriage is moved laterally so that lthe front separator vvilll descend in the po sition indicated by dotted line 42X, Fig. 4, to individualixe the nextl thread, Which Will beone indicated by w. The reciprocation of the separators is effected by reeiprocation ot' the `plate. 46 horizontally, the eoperation oi the stnds 44 and the cam slots 45 causing one separatori to rise as the other falls, and vice versa, as will be apparent. To effect the reciprocation of plate 46 (which is builtout at 49 around the raeeway) I have connected the front end of said plate hy a slot- 'and-pin connection 50, Fig. 1, `with the lower end of a lever 51 fulcrumed at 52 on the carriage. At its upper end the lever has a follower roll 53 which travels in the groove 54 of a Cain cylinder 55 fast on' the actuating shaft 23, the groove being so shaped that yfor each complete revolution ot the shaft the plate 4G will be moved in one direction and hack again. Thaty is, as two detectors are discharged from. the series er group 6* at each revolution ot' the combined separating and discharging device, both thread separators 42 will be moved into and outI of operative position with respect to the sheet of' Warp, in alternation, for every revolution of shaft 23. Thus as the detectors are discharged one by. one the carriage is moved bodily across the sheet of Warp, andthe Warp threads are separated, individualized and positioned one by one each to receive a detector as it is delivered troni the raceway 38. When the carriage has traversed the full Width of the Warp the 4threads thereof will each have been supplied of detectors will thus be strung upon the threads, extending across the sheet. Those upon the threads'lw Will tend to slide for- Ward toward the lease rod W, while those on the threads will in like manner tend to slide toward the rod WC The two banks or sets of detectors may be left separate, and a supporting'bar can be extendrd through the slots 7' of each bank, or the oler members and supportl shown in my tents hereinbefore referred to can be so ..4 plied It. Will be manifest, however, that L( is not material to this invention what part nlar manipulation ot the detectors is adr d, nor the particular character of the cooperating part of the stop-motion, for this invention'had for )varp with drop-devices or detectors forming a part ot' a stop-rnotionl have shown herein one practical emf bodiment of my invention, but the same may be modified or varied in different; 'd

automatically Witha detector, and a seriesit object the automatic equipmentof the laterally, individualizing the thread w and 1 ositioning it beneath the raceway 38 to re- Having fully described my invention,

'A what I claim as new and desire to secure by Letters Paten-t is:

-ing a thread-receiving openin l. In apparatus of the class described, means to support in lupright position a group of detectors above the sheet of warp; means to separate and discharge theA detectors one by one from `the group; a device to direct the separated and discharged detectors onto the warp threads, each detector having a thread-receiving opening provided with an unobstructed entranceffor the pas. sage of the thread, and means Ato position one after another-of the warp threads vfor the reception of a detector. l

2. In apparatus of the class described, a support for a group of detectors each havprovided with an entrance for the threa means to separate and discharge the detectors one by one from the grouppa device to direct the separated and discharged detectors onto the warp threads in a sheet of warp, and means to position the warp threads one by one for the reception of a detector, the positioned thread passing through the entrance into the opening in the detector when the latter is directed onto such thread.

3. In apparatus of the class described, means to support above the-warp a group of detectors placed .face to face in upright cessively the.` War position, each detector having a thread-receiving opening; meansl to separate the detectors from the group and discharge them one by one; a device to receive the discharged detectors and present them in upright position to thcwarp threads,y to hang thereupon, and means to individualize sucthreads ofl a sheetof warp and position the individualized threads ffr coperation with a detector directed thereto.

4. In apparatus of the class described,N means to support above the warp a group of detectors placed face to face in upright position, each detector having a thread-receiving opening; means to separate the detectors from the group and discharge them one by one; an upright raeeway having a flaring mouth, to receive the discharged detectors and direct them in upright position onto the warp threads, and means to coperate with one thread after another in a sheet'of Warp and position the thread for the reception of a detector delivered by the raceway.

5. In apparatusof the class described, means to sup ort above the Warp a group ofdetectors eac" having a downwardly open v`ineansrto separate temporarily from its fel lows one after andther of the threads of a thread-receiving slot; means to discharge the detectors one by one' fromgthe group; a

d evice to direct a discharged detector in upright position, onto a warp thread, the thread entering the slot in thek detector, and

means acting uponone after anotherof the means to temporarily and laterally separate from vits fellowsone after another of the threads of a sheet of warp; a device to direct a detector onto the separated thread, and means to deliver a single detector to said device each time a warp thread is posi- 3o tioned for the reception of a detector, each detector having anA open s lot to receive the thread.

y7. In apparatus of theflclass described,

sheet of Warp; a raceway to direct a de` tector `onto the separated warp thread and maintain thedetector in upright position as it is directed to the thread; means to deliver. detectors one byoe 7to the raceway, each detector having an ,pen threadmeceivA ing slot; a carriage onf which the threads| separating and detector-deliverig means,

are mounted, and an instrumentality to move said carriage step by step transversely of the sheet of warp.

8. In apparatus of the class described,

means to support in upright position above the sheet `of warp a group of. detectors placed face to face and each having a thread receiving slot; a directing device below said means, to receive and `vdirect detectors discharged frorh the group, and automatic means to engage the endmost detector of the group, separate it therefrom, and discharge the separated detector into said directing device, whereby the detectors are separated one by one, from' the group and discharged there rom. f

9. In apparatus of the class described, means to support in upright position face to face a group of detectors each having a downwardly open slot, and a key-hole aper-Y ture, the extensions ot the apertures in adjacent detectors extending in opposite directions, a rotatable, spiral separator to enter the said apertures and separate the detectors one by one from the group, the separator moving one detector away from the group While holding the next detector, and the group, from such movement, and means to direct detectors to the threads of a sheet of Warp -as they are discharged one by'one by the separator, each thread entering,r the Vopen slot of a detector as the latter is directed to the thread.

10. In apparatus of the class described, Warp separating means; a device to direct detectors to the separated warp, each detector having a keyhole aperture and a thread-receiving, open slot; means to sup port a group ot upright detectors inpri ing?r a rotatable shall to traw the apertures and support the detectors. a guide for the lower ends thereof. and a follower lo feed the group alongr the shaft'. and means mounted on the outer Aend ot said shaft to engage one after ano-ther of the detectors, separate them from the group. and dis` charge'thein singly into the said directimg4 device.

ll. lin apparatus oit the class described. means to support a group of detectors each having' an open thread-lecciving slot; n'ieans to separate and discharfjthe detectors one by one from the group; 'a denier to direct the discharged detectors onto the threads of a sheet of warp: means to individualize and position the threads one atteianotlicr for the reception of the detectors. said means comprising a reciprocating tapered spreader to enter between and separate laterally adjacent threads. and an instriunentalitv to move said spreader step h v step. across the sheet o' warp.

l2. ln apparatus of the class described` a carriage. means to move it step b'v step transversely of a sheet ot' warp: a pair of vertically and alternatelyv reciprocating, tzr pered spreaders mounted on the carriage and adapted at each descent to separate latorally a Warp thread from its fel lows. whereby one after another of the threads are acted upon as the carriage is moved transverscly ot the warp, and means to direct detectors onto the separated threads, each detector having a slot to receive the thread onto which it is directed.

13. ln :niparatus of the class described. a arriaga a ,quidevay therefor located above and transverse to a sheet of warp; means on the. carriage to separate one after another of the Warp threads and position the sante for the reception of a detector; means on the carriage to separate detectors one by one from a group ol" detectors, the separated detectors descending by gravity onto the warp threads, each detector ha ving an open thread-receiving slot; means to move the carriageI step by step along its guideway; an actuating member, and operating cdn'nections between it and the several means before-mentioned.

lfhcln apparat-us of the class described, a carriage, a guideway for and to support the' carriage above a sheet ot' warp, the carriage movable lengthwise of said guideway; actuating' means to ettect such movement step h v step; means on the carriage having provision for supporting in upright position a group of deter-,tors (are to tace and cach having! a thread-recifzing; opening; means operatively connected with said actuating means to separate aus fi-claarge periodically' a detector troni the groupr` the discharged detector descemlingr by grmity to the sheet of warp; and means on the eari'iand opY itingj auto-nntticallv to present one thread :ther another in position to receive a discharged detecter.

l). ln apparatus of the class described. means' movable bodily adjacent -to and transversely of the sheet ol' warp to poiition thc thrlads one b v one tor the reception olA r'letcctors each havinc au pen tlncafl-re- #citing slot. an instr ientality' to dcliacr detector one b v one to the thread.' as are positioned, said instrumentaliv iciutf nnfivable bodily; in unison with he lrcadY pos-i-tio'nin gy means. and mechanism to e'iirct step by step bodily mowrnent ot lsaid means and the delectcr--delivcring inslrunu'nlalit i'.

1lb.' ln apparatus of the class desi-ril Id. means adjacent the sheet of warp to position the thrads thereof one b v one for the reception ot detectors havingl open threadreceiving slots. an insti-mmmtalitiv to deliver detectors one b v onx and more them on to the threads as they are positioned. such thread passing; into the open slot ol the do teclcr as the latter delivered and means to etlect step by step relativel lateral mov(L nient of the sheet of warp and said instrumentalit)Y and the warp-positioning means.

1li. ln appa atus asthe class described. a support tor a series* ot' detectors placed face to face and each having a thread-receiving opening; a separator to engage the leading detector of the series and discharge it theretrcm, a device throngl'i which the discharged detector passes b v gravitaT to thread engaging position, and means to position the warp threads one, by one below said dei ice to receive the detector as it emerges therefrom, combined with mechanism to ctlect simultaneous bodily movement of said several means step by step transversely of the warp.

i8. ln apparatus of the class: described, a guideway adapted tor attachment to the sides ot' a. loom above the warp, a farriage movable upon and longitudinally of the guideway, Warp separating means on the carriage.r to position the threads one by one for the reception of a detector; a support for a series of detectors placed face to flaco and each having an open Warp-receiving slot, said support being mounted on the carriage; a separator to engage the leading detector of the series and discharge it; a raceway connected with the carriage and through which a discharged detector passes to en gage and hang upon a warp thread; means to feed the series toward the separator, and mechanism to eect gradual movement of the carriage along the guideway, to thereby place the detectors on one after another of the threads of the Warp sheet.

19. In apparatus of the class described,

means to ,support in upright position a series of opeinslottecl detectors placed face to face anfl each having a key-hole aperture, the cxten ions of adjacent detectors projecting in opposite directions; a rotatable, spiral separator tn enter the apertures of the dctwt'oisy and separate them one by one from the series, rotation of the separator effecting movement longitudinally thereof of the separated detector, to discharge the saine; .a directing device through which the dis-- charged (lt-lector passes by gravity with its l t t t t t l Open slot downturned, and means to position one by one the threads of a sheet of warp for the entrance of the positioned thread into the open slot` of a detector pnesing from the directing device.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

JOHN F. DUSTIN.

VitnesSes Hanny S. Termin, DUNCAN VVooD. 

